Concrete form



Patented ct. 4, 1927.

Unire 'raar orrics.

JOHN N. HELTZEL, OF WARREN, OHIO.

CONCRETE FORM.

Application filed` August 6, 1926. Serial No. 127,596.

The present invention relates toconcrelte forms, and aids to provideimprovements in forms used for molding curbs, curbs andy device ispractical and efficient in use, and

the parts thereof readily assembled and separated.

Another object is the provision of a novel connection between theadjacent ends of alining form members, plates or rails, permitting theform to be built to any length desired with the form members or platesconnected or assembled end to end. r

A further object is the provision of form members or plates disposed endto end in combination with yokes or arches at the adjacent ends thereof,and novel means for assembling said members or plates and yokes orarches, for holding the parts in place when assembled and permittingconvenient separation of the parts.

Another object of the invention is the provision of novel means foraccommodating a. division plate.

lVith the foregoing and other objects in view, which will be apparentVas the description proceeds, the invention resides in the constructionand arrangement of parts, as hereinafter described and claimed, it beingunderstood that changes can be made within the scope of what is claimed,without departing from the spirit of the invention.

The invention is illustrated in the accompaning drawings, wherein-Figure 1 is a perspective View of a concrete curb form embodying theimprovements.

Fig. 2 is a horizontal section on the line 2-2 of Fig. 1.

. Fig. 3 is a sectional detail on the line 3 3 of Fig. 1.

Fig. 4 is a sectional detail illustrating a modification.

Fig. 5 is a transverse vertical section of a wall form embodying theimprovements.

n The form shown in Figs. 1 and 2 is intended especially for mouldingcurbs, although it may be made of wider construction for mouldingsidewalks, pavements, land the like. The rails or form members 14 aredisposed end to end, to build the form'to any .desired length, and arebent from suitable sheet metal. Said rails constitute the side walls orplates of the form, and have upper and lower outstanding flanges 15.

Between each of the adjacent ends of the rails or form members at theopposite sides is disposed a yoke or arch 16 which has the limbs 17 ofchannel-shape Aor U-shaped cross section withtheir flanges or edgesprojecting inwardly toward the opening of the yoke or arch, and theupper or crown portion of the yoke or arch'is slotted, as at18,'in orderthat a division plate 19 `may be slid'vertically into and out of theyoke between thefopposite side portions thereof, with the edges of thedivision plate between the langes of the limbs 17, as seen in Fig. 2.The division plate 19 preferably projects above the yoke and has arslot20 providing a hand hold for conveniently sliding the Vdivision plateinto and out of the yoke.

The rails or fornrmembers and yoke are assembled in such a manner as tohold the form erect when the parts ar-evassembled and enabling the parts`to be readily separated. Thus, the rails or plates 14 have outstandingflanges 21 at their ends, which may be the flanges of angle ironssecured to the webs of the rails 14. Said fianges 21 abut the flanges ofthe limbs 17 of the yoke, whereby the ends of the rails firmly abut theyoke or arch. Latches or dowels 22 are slidable in guides 28 secured tothe rails or plates 14 and are adapted to be inserted or projected intoapertures l24 with which the flanges 21 and the flanges of the limbs 17are provided, thereby holding the rails and yoke assembled againsttransverse or vertical displacement. If desired, the latches or dowels22 need not be employed at both sides of the yoke, inasmuch as thelatches or dowels at one side of the yoke may be sufficiently long toproject through the yoke and both flanges 21 of the alining rails at theopposite sides of the form'. |Thus, referring to Fig. 2, either thelatches at the right or the left of the yoke 16 may be eliminated, butIby using the latches at both ends of the rails or form plates said railsor plates may be reversed. y

The parts are readily assembled, as Will be apparent from the foregoing,and it is also an easy matter to remove one of the rails or plates.Thus, by retracting the dowels or ylatches 22 of the rail that is to beremoved,Vr

the rail may be readily moved transversely from between the yokes orarches between which it is disposed, thereby exposing the correspondingside of the curb in order that same may be finished by hand. The upperportions of the yokes 16 are spaced above the rails or plates 14 inorderthat the upper surface of the curb may be readily finished underthe upper portion of the yoke, after the division plate 19 has beenwithdrawn.

As shown in Figs. 1 and 3, the flanges 21 of the rails and limbs 17 ofthe yoke may have apertures 26 through which bolts 25 or other securingelementsmay be'engaged for clampingfthe rail ends and yoke together, soas to prevent longitudinal separat-ion ot the parts. Y

`Fig. 4 illustrates a slight modification in that the flanges of thelimb 17 a ofthe yoke 16a are spaced apart farther than as shown in Figs.2 and 3, and the terminals of the rails or plates 14a project bevond theflanges 21 across the edges of the limb ot the yoke to abut the divisionplate 19.y

Fig. 5 illustrates thedevice constructed as a wall form, the yoke orarch 1Gb being of greater height, and a number of rails or form members14b being superposed. The rails or plates 14:" have end flanges 21 toabut the yoke, the same as shown in Figs. 1 and 2, and the rails alsohave the latches or dowels 2Q to engage the yoke. The construction issubstantially the same as shown in Figs. 1 and 2, excepting that thereare any suitable number of rails disposed one on the other, and thedivision plate 19 need not be used,rexc'epting When desired to form theend of a wall.

Having thus described the invention, what is claimed as new is :--l

1. A yoke for ar Aconcrete form `having channel-shaped limbs adapted toreceive a division plate therein.

2. A, yoke for a concrete form having channel-shaped limbs and a slottedupper portion adapted to receive a division plate therein.

3. A yoke for a concrete form having limbs of channel shape Vwith theirHanges projecting inwardly, and having a slotted upper portion, incombination with a division plate slidable through said slotted portionand between the flanges-of the limbs.

Y t. A concrete `form comprising form mem-- bersdisposedend to end, ayoke at the adjacent ends thereof having channel-shaped limbs, means forholding said members. and yoke assembled.l and a. division plateslidable in said limbs of the yoke.

5. concrete form comprising 'forni meinbers disposed end to end, av yokeat the adjacent ends thereof having channel-shaped limbs, said membershaving flanges at their ends abutting the flanges of said limbs.ylatches carried by said members and slidable through said flanges, and adivision plate slidable in the yoke between the llanges of said limbs. y

In testimony whereof I hereunto affix my signature.

JOHN N. HELTZEL.

